Got a rifle build in the works, going to be on a win 70 push feed mag action that I own, broughton 5c 1 in 8 twist 6.5 barrel. I am planning to have barrel length no more than 20" to be easy packing with an 8" long suppressor. I seem to recall a thread a while back where someone said a Sherman magnum out of a 20" tube was running 130gr pills at just over 3000, am I remembering wrong? I will run 127gr lrx bullets or hammers. I use both in my 6.5/284 for my son. Thanks in advance.